// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// This file contains the Logger class.

#ifndef GPU_COMMAND_BUFFER_SERVICE_LOGGER_H_
#define GPU_COMMAND_BUFFER_SERVICE_LOGGER_H_

#include <string>

#include "base/callback.h"
#include "gpu/gpu_export.h"

namespace gpu {
namespace gles2 {

    typedef base::Callback<void(int32 id, const std::string& msg)> MsgCallback;

    class DebugMarkerManager;

    class GPU_EXPORT Logger {
    public:
        static const int kMaxLogMessages = 256;

        explicit Logger(const DebugMarkerManager* debug_marker_manager);
        ~Logger();

        void LogMessage(const char* filename, int line, const std::string& msg);
        const std::string& GetLogPrefix() const;

        // Defaults to true. Set to false for the gpu_unittests as they
        // are explicitly checking errors are generated and so don't need the numerous
        // messages. Otherwise, chromium code that generates these errors likely has a
        // bug.
        void set_log_synthesized_gl_errors(bool enabled)
        {
            log_synthesized_gl_errors_ = enabled;
        }

        void SetMsgCallback(const MsgCallback& callback);

    private:
        // Uses the current marker to add information to logs.
        const DebugMarkerManager* debug_marker_manager_;
        std::string this_in_hex_;

        int log_message_count_;
        bool log_synthesized_gl_errors_;

        MsgCallback msg_callback_;
        DISALLOW_COPY_AND_ASSIGN(Logger);
    };

} // namespace gles2
} // namespace gpu

#endif // GPU_COMMAND_BUFFER_SERVICE_LOGGER_H_
